ARM Technical Support Knowledge Articles

Can PL340 support 512MByte memory?

Applies to: PL340 AXI SDRAM Controller

Answer

The maximum size for any particular memory, that is supported by PL340 configurations, is 256 Mbyte though 512 MB devices can be supported by using 2 chip selects of the PL340.

Currently only address bits 27:0 can be used for addressing any individual chip select. Row length can be between 11 to 16 bits, column width can be 8 to 12 bits. Please note that only 4 banks are supported and memory width can be 16,32 or 64 bit.

Article last edited on: 2008-09-09 15:47:52

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